Saying “non lo so” is absolutely correct grammatically speaking, but let’s face it: using this sentence all the time is not the best way to express yourself… That’s why we’ve selected some alternatives to avoid saying “non lo so”!

Mi piacerebbe saperlo! (I wish I knew!)

Se lo sapessi, te lo direi! (If I knew, I’d tell you!)

Ma che ne so! (But what do I know!)

Also this expression is used very often!

Have you noticed that in three of the listed expressions we use the “ne“? If you are wondering what it stands for, it refers to what we don’t know! If you want to learn more about it, we have a detailed lesson about the particle NE!